Official PYQ · 2019Set 1 · Q37Transmission LinesMCQ2 marks

GATE EC 2019 Set 1 Q37 — Transmission Lines

The dispersion equation of a waveguide, which relates the wavenumber $k$ to the frequency $\omega$ is

$k(\omega)= (1/c) \sqrt{\omega^{2}-\omega_{\circ}^{2}}$

where the speed of light $c= 2 \times 10^{8}\: m/s$ and $\omega_{\circ}$ is a constant . If the group velocity is $2 \times 10^{8}\: m/s$ , then the phase velocity is

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Published 10 Oct 2026

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